IEC_61523-3-2004_IEEE_1497.pdf

INTERNATIONAL STANDARD IEC61523-3 First edition2004-09 IEEE 1497 Delay and power calculation standards Part 3:Standard Delay Format(SDF)for the electronic design process Reference number IEC 61523-3(E):2004 IEEE Std.1497(E):2001 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series.For example,IEC 34-1 is now referred to as IEC 60034-1.Consolidated editions The IEC is now publishing consolidated versions of its publications.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to the base publication,the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2.Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating to this publication,including its validity,is available in the IEC Catalogue of publications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication,as well as the list of publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publications The on-line catalogue on the IEC web site(www.iec.ch/searchpub)enables you to search by a variety of criteria including text searches,technical committees and date of publication.On-line information is also available on recently issued publications,withdrawn and replaced publications,as well as corrigenda.IEC Just Published This summary of recently issued publications(www.iec.ch/online_news/justpub)is also available by email.Please contact the Customer Service Centre(see below)for further information.Customer Service Centre If you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.ch Tel:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Delay and power calculation standards Part 3:Standard Delay Format(SDF)for the electronic design process INTERNATIONAL STANDARD IEC61523-3 First edition2004-09 IEEE 1497Commission Electrotechnique InternationaleInternational Electrotechnical Commission IEEE 2004 Copyright-all rights reserved IEEE is a registered trademark in the U.S.Patent&Trademark Office,owned by the Institute of Electrical and Electronics Engineers,Inc.No part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.ch The Institute of Electrical and Electronics Engineers,Inc,3 Park Avenue,New York,NY 10016-5997,USATelephone:+1 732 562 3800 Telefax:+1 732 562 1571 E-mail:stds-infoieee.org Web:www.standards.ieee.org LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.CONTENTS FOREWORD.3 IEEE Introduction.7 1.Overview.8 1.1 Scope.8 1.2 Organization of this standard.8 2.References.9 3.Conventions.9 3.1 Terminology conventions.9 3.2 Syntactic conventions.9 4.SDF in the design process.12 4.1 Sharing of timing data.12 4.2 Using multiple SDF files in one design.12 4.3 Timing data and constraints.13 4.4 Timing environments.13 4.5 Back-annotation of timing data for design analysis.13 4.6 Forward-annotation of timing constraints for design synthesis.15 4.7 Timing models supported by SDF.16 5.Defining the standard delay format.18 5.1 SDF file content.18 5.2 Header section.20 5.3 Cells.25 5.4 Delays.28 5.5 Timing checks.46 5.6 Labels.60 5.7 Timing environment.62 Annex A(normative)Syntax of SDF.74 Annex B(informative)SDF file examples.84 Annex C(informative)List of Participants.89 IEC 61523-3:2004(E)IEEE 1497-2001(E)2 Published by IEC under licence from IEEE.2004 IEEE.All rights reserved.LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONAL ELECTROTECHNICAL COMMISSION _ DELAY AND POWER CALCULATION STANDARDS Part 3:Standard Delay Format(SDF)for the electronic design process FOREWORD 1)The International Electrotechnical Commission(IEC)is a worldwide organization for standardization comprising all national electrotechnical committees(IEC National Committees).The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields.To this end and in addition to other activities,IEC publishes International Standards,Technical Spe